Raylib flying camera example

diff --git a/src/camera.h b/src/camera.h
index 15958ddd..b1913823 100644
--- a/src/camera.h
+++ b/src/camera.h
@@ -83,6 +83,7 @@
         CAMERA_CUSTOM = 0,
         CAMERA_FREE,
         CAMERA_ORBITAL,
+        CAMERA_FLYING,
         CAMERA_FIRST_PERSON,
         CAMERA_THIRD_PERSON
     } CameraMode;
@@ -164,6 +165,12 @@ void SetCameraMoveControls(int keyFront, int keyBack,
 // ORBITAL_CAMERA
 #define CAMERA_ORBITAL_SPEED                            0.01f       // Radians per frame

+// FLYING CAMERA
+//#define CAMERA_FLYING_MOUSE_SENSITIVITY                 0.003f
+#define CAMERA_FLYING_FOCUS_DISTANCE                    25.0f
+#define CAMERA_FLYING_MIN_CLAMP                         89.0f
+#define CAMERA_FLYING_MAX_CLAMP                        -89.0f
+
 // FIRST_PERSON
 //#define CAMERA_FIRST_PERSON_MOUSE_SENSITIVITY           0.003f
 #define CAMERA_FIRST_PERSON_FOCUS_DISTANCE              25.0f
@@ -263,7 +270,11 @@ void SetCameraMode(Camera camera, int mode)
     CAMERA.playerEyesPosition = camera.position.y;          // Init player eyes position to camera Y position

     // Lock cursor for first person and third person cameras
-    if ((mode == CAMERA_FIRST_PERSON) || (mode == CAMERA_THIRD_PERSON)) DisableCursor();
+    if (
+      (mode == CAMERA_FLYING) ||
+      (mode == CAMERA_FIRST_PERSON) ||
+      (mode == CAMERA_THIRD_PERSON)
+    ) DisableCursor();
     else EnableCursor();

     CAMERA.mode = mode;
@@ -411,6 +422,39 @@ void UpdateCamera(Camera *camera)
             camera->position.z = cosf(CAMERA.angle.x)*CAMERA.targetDistance*cosf(CAMERA.angle.y) + camera->target.z;

         } break;
+        case CAMERA_FLYING:   // Camera moves as in a first-person game but not locked to ground, controls are configurable
+        {
+            camera->position.x += (sinf(CAMERA.angle.x)*direction[MOVE_BACK] -
+                                   sinf(CAMERA.angle.x)*direction[MOVE_FRONT] -
+                                   cosf(CAMERA.angle.x)*direction[MOVE_LEFT] +
+                                   cosf(CAMERA.angle.x)*direction[MOVE_RIGHT])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            camera->position.y += (sinf(CAMERA.angle.y)*direction[MOVE_FRONT] -
+                                   sinf(CAMERA.angle.y)*direction[MOVE_BACK] +
+                                   1.0f*direction[MOVE_UP] - 1.0f*direction[MOVE_DOWN])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            camera->position.z += (cosf(CAMERA.angle.x)*direction[MOVE_BACK] -
+                                   cosf(CAMERA.angle.x)*direction[MOVE_FRONT] +
+                                   sinf(CAMERA.angle.x)*direction[MOVE_LEFT] -
+                                   sinf(CAMERA.angle.x)*direction[MOVE_RIGHT])/PLAYER_MOVEMENT_SENSITIVITY;
+
+            // Camera orientation calculation
+            CAMERA.angle.x += (mousePositionDelta.x*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+            CAMERA.angle.y += (mousePositionDelta.y*-CAMERA_MOUSE_MOVE_SENSITIVITY);
+
+            // Angle clamp
+            if (CAMERA.angle.y > CAMERA_FLYING_MIN_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FLYING_MIN_CLAMP*DEG2RAD;
+            else if (CAMERA.angle.y < CAMERA_FLYING_MAX_CLAMP*DEG2RAD) CAMERA.angle.y = CAMERA_FLYING_MAX_CLAMP*DEG2RAD;
+
+            // Recalculate camera target considering translation and rotation
+            Matrix translation = MatrixTranslate(0, 0, (CAMERA.targetDistance/CAMERA_FREE_PANNING_DIVIDER));
+            Matrix rotation = MatrixRotateXYZ((Vector3){ PI*2 - CAMERA.angle.y, PI*2 - CAMERA.angle.x, 0 });
+            Matrix transform = MatrixMultiply(translation, rotation);
+
+            camera->target.x = camera->position.x - transform.m12;
+            camera->target.y = camera->position.y - transform.m13;
+            camera->target.z = camera->position.z - transform.m14;
+        } break;
         case CAMERA_FIRST_PERSON:   // Camera moves as in a first-person game, controls are configurable
         {
             camera->position.x += (sinf(CAMERA.angle.x)*direction[MOVE_BACK] -
diff --git a/src/raylib.h b/src/raylib.h
index 24992a4f..bf5baa4d 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -855,6 +855,7 @@ typedef enum {
     CAMERA_CUSTOM = 0,
     CAMERA_FREE,
     CAMERA_ORBITAL,
+    CAMERA_FLYING,
     CAMERA_FIRST_PERSON,
     CAMERA_THIRD_PERSON
 } CameraMode;